Volume 23 - Issue 1 - April 2021


Tan-G class of trigonometric distributions and its applications

Luciano Souza1, Wilson Rosa de O. Júnior2, Cícero Carlos R. de Brito3, Christophe Chesneau4, Renan L. Fernandes5, Tiago A. E. Ferreira6

1,2,6 RPPGBEA, Universidade Federal Rural de Pernambuco, Recife/PE, Brazil.

3 Instituto Federal da Pernambuco, Pernambuco/PE, Brazil.

4 LMNO, University of Caen-Normandie, Caen, 14032, France.

5 Centro de Informática, Universidade Federal de Pernambuco, Recife/PE, Brazil.

Received: 12 February 2020 / Accepted: 23 December 2020

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Anisotropic problem with non-local boundary conditions and measure data

A. Kabore, S. Ouaro

Laboratoire de Mathématiques et Informatiques (LAMI), UFR. Sciences Exactes et Appliquñees, Université Joseph KI-ZERBO, 03 BP 7021 Ouaga 03, Ouagadougou, Burkina Faso.

Received: 13 November 2019 / Accepted: 06 January 2021

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Convolutions in (μ,v)-pseudo-almost periodic and (μ,v)-pseudo-almost automorphic function spaces and applications to solve integral equations

David Békollè1, Khalil Ezzinbi2, Samir Fatajou3, Duplex Elvis Houpa Danga4, Fritz Mbounja Béssémè5

1,4 Department of Mathematics, Faculty of Science, University of Ngaoundéré P.O. Box 454, Ngaoundéré, Cameroon.

2,3 Department of Mathematics, Faculty of Science Semlalia, Cadi Ayyad University, B.P. 2390 Marrakesh, Morocco.

5 Department of Mines and Geology, University of Ngaoundéré P.O. Box 454, Ngaoundéré, Cameroon.

Received: 22 August 2020 / Accepted: 09 January 2021

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Hyper generalized pseudo Q-symmetric semi-Riemannian manifolds

Adara M. Blaga1, Manoj Ray Bakshi2, Kanak Kanti Baishya3

1 Department of Mathematics, West University of Timişoara, Timişoara, România.

2,3 Department of Mathematics, Kurseong College, Kurseong, Darjeeling, India.

Received: 04 July 2020 / Accepted: 21 January 2021

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Extended domain for fifth convergence order schemes

Ioannis K. Argyros1, Santhosh George2

1 Department of Mathematical Sciences, Cameron University, Lawton, OK 73505, USA.

2 Department of Mathematical and Computational Sciences, NIT Karnataka, India

Received: 02 June 2020 / Accepted: 25 January 2021

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Inequalities and sufficient conditions for exponential stability and instability for nonlinear Volterra difference equations with variable delay

Ernest Yankson

Department of Mathematics, University of Cape Coast, Ghana.

Received: 02 June 2020 / Accepted: 01 February 2021

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Energy transfer in open quantum systems weakly coupled with two reservoirs

Franco Fagnola1, Damiano Poletti2, Emanuela Sasso3

1,2 Dipartimento di Matematica, Politecnico di Milano, Piazza Leonardo da Vinci 32, I-20133 Milano, Italy.

3 Dipartimento di Matematica, Università di Genova, Via Dodecaneso 35, I - 16146 Genova, Italy.

Received: 21 September 2020 / Accepted: 09 February 2021

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Existence and attractivity results for ψ-Hilfer hybrid fractional differential equations

Fatima Si bachir1, Saïd Abbas2, Maamar Benbachir3, Mouffak Benchohra4, Gaston M. N’Guérékata5

1 Laboratory of Mathematics and Applied Sciences, University of Ghardaia, 47000, Algeria.

2 Department of Mathematics, University of Saīda–Dr. Moulay Tahar, P.O. Box 138, EN-Nasr, 20000 Saīda, Algeria.

3 Department of Mathematics, Saad Dahlab Blida1, University of Blida, Algeria.

4 Laboratory of Mathematics, Djillali Liabes University of Sidi Bel-Abbès, P.O. Box 89, Sidi Bel-Abbès 22000, Algeria.

5 NEERLab, Department of Mathematics, Morgan State University, 1700 E. Cold Spring Lane, USA.

Received: 12 November 2020 / Accepted: 01 March 2021

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Idempotents in an ultrametric Banach algebra

Alain Escassut

Université Clermont Auvergne, UMR CNRS 6620, LMBP, F-63000 Clermont-Ferrand, France.

Received: 05 November 2020 / Accepted: 17 March 2021

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Existence, well-posedness of coupled fixed points and application to nonlinear integral equations

Binayak S. Choudhury1, Nikhilesh Metiya2, Sunirmal Kundu3

1 Department of Mathematics, Indian Institute of Engineering Science and Technology, Shibpur, West Bengal, India.

2 Department of Mathematics, Sovarani Memorial College, Jagatballavpur, Howrah-711408, West Bengal, India.

3 Department of Mathematics, Government General Degree College, Salboni, Paschim Mednipur , West Bengal, India.

Received: 14 June 2020 / Accepted: 29 March 2021

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Volume 23 - Issue 2 - August 2021


The Zamkovoy canonical paracontact connection on a Para-Kenmotsu Manifold

D. G. Prakasha1, H. Harish2, P. Veeresha3, Venkatesha4

1 Department of Mathematics, Davangere University, Davangere - 577 007, India.

2 Department of Mathematics, Mahaveera College, Mudbidri, India.

3 Department of Mathematics, Karnatak University, Dharwad - 580 003, India.

4 Department of Mathematics, Kuvempu University, Shankaraghatta - 577 4511, Shimoga District, India.

Received: 27 May 2020 / Accepted: 01 December 2020


Coincidence point results of nonlinear contractive mappings in partially ordered metric spaces

K. Kalyani1, N. Seshagiri Rao2,

1 Department of Mathematics, Vignan’s Foundation for Science, Technology & Research Vadlamudi, India.

2 Department of Applied Mathematics, Adama Science and Technology University, Post Box No.1888, Adama, Ethiopia.

Received: 25 November 2020 / Accepted: 01 April 2021


Existence results for a multipoint Boundary value problem of nonlinear sequential Hadamard fractional differential equations

Bashir Ahmad1, Amjad F. Albideewi2, Sotiris K. Ntouyas3, Ahmed Alsaedi4

1,2,3,4 Nonlinear Analysis and Applied Mathematics (NAAM) Research Group, Faculty of Science, King Abdulaziz

University, Jeddah 21589, Saudi Arabia.

Received: 05 October 2020 / Accepted: 12 April 2021